I do think Griffin deserved it.
He held the belt, even if it was only once with no defense.
He was the first Ultimate Fighter winner.
The fight against Bonnar was declared the #1 UFC fight of all time in the UFC Ultimate 100 Greatest Fights.
Three fights of the year.
Four fight of the nights. 1 Submission of the night
10 and 5
I think that all of that coupled with what his fight with Bonnar did for the business means he should get it. Taken bit by bit it's not a whole lot but when added up I think it is.